	US 12,186,712 B2
	Carbon membrane for fluid separation use
Yuki Yamashita, Otsu (JP); Dai Kondo, Otsu (JP); Takaaki Mihara, Otsu (JP); and Tomoyuki Horiguchi, Otsu (JP)
Assigned to TORAY INDUSTRIES, INC., Tokyo (JP)
Appl. No. 17/419,830
Filed by TORAY INDUSTRIES, INC., Tokyo (JP)
PCT Filed Jan. 16, 2020, PCT No. PCT/JP2020/001199 § 371(c)(1), (2) Date Jun. 30, 2021, PCT Pub. No. WO2020/149352, PCT Pub. Date Jul. 23, 2020.
Claims priority of application No. 2019-006739 (JP), filed on Jan. 18, 2019.
Prior Publication US 2022/0080365 A1, Mar. 17, 2022
Int. Cl. B01D 71/02 (2006.01); B01D 53/22 (2006.01); B01D 67/00 (2006.01); B01D 69/08 (2006.01); B01D 69/10 (2006.01)

CPC B01D 71/021 (2013.01) [B01D 53/228 (2013.01); B01D 67/0067 (2013.01); B01D 69/087 (2013.01); B01D 69/105 (2013.01); B01D 69/108 (2022.08); B01D 2256/245 (2013.01); B01D 2257/504 (2013.01); B01D 2323/12 (2013.01); B01D 2325/023 (2013.01)]

10 Claims

1. A carbon membrane for fluid separation use, the membrane including a dense carbon layer formed on a porous carbon support,

wherein the porous carbon support has a membrane thickness of 10 μm or more, and

wherein X<Y when a ratio of a content of silicon atoms to a total content of carbon atoms and silicon atoms at a center position of the porous carbon support in a membrane thickness direction of the porous carbon support is X (atomic %), and a ratio of a content of silicon atoms to a total content of carbon atoms and silicon atoms at a position of 3 μm from an interface between the porous carbon support and the dense carbon layer to a porous carbon support side is Y (atomic %).